AWS A5.18 ER70S-6
Solid Electrodes and Rods, Welding Wire — ER70S-6
ER70S-6
ER70S-6 [ER48S-6] are intended for both single- and multi-pass welding. They are especially suited for sheet metal applications, where smooth weld beads are desired, and structural and plate steels that have moderate amounts of rust or mill scale. These electrodes permit the use of higher current ranges with either CO2 (AWS A5.32 Class SG-C) shielding gas or with mixtures of argon and oxygen (AWS A5.32 Class SG-AC-Y). However, these electrodes do require a higher level of oxidation than the previously described electrodes when using either binary or ternary argon shielding gas mixtures per the AWS A5.32 specification. Typical base metal specifications are often the same as those for the “ER70S-2 [ER48S-2] classification.
| Nominal Chemical Composition (%) | Tensile Strength | Yield Strength | Elongation | Average Impact Strength | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Mn | Si | P | S | Ni | Cr | Mo | V | Cu | Ti | Zr | Al | psi (min) | MPa (min) | psi (min) | MPa (min) | % (min) | 20 ft•lbf @ |
| 0.06-0.15 | 1.40-1.85 | 0.80-1.15 | 0.025 max | 0.035 max | 0.15 max | 0.15 max | 0.15 max | 0.03 max | 0.50 max | – | – | – | 70,000 | 480 | 58,000 | 400 | 22 | -20°F |